Mytacism(n.) Too frequent use of the letter m, or of the sound represented by it.
Thesaurus Entries
abandon, abandonment, abjection, abomination, abuse of terms, acrostic, adulteration, alienation, amphibologism, amphiboly, anagram, antiphrasis, atrocity, bad, bane, barbarism, bastardizing, befouling, befoulment, biodegradability, biodegradation, blight, brainwashing, breakup, bribery, bribery and corruption, bribing, cacoepy, cacology, calembour, carrion, college of Laputa, colloquialism, contamination, corrosion, corruptedness, corruptness, counterindoctrination, criminality, crookedness, crying evil, cutting, damage, dandruff, debasement, decadence, decadency, decay, decomposition, defilement, degeneracy, degenerateness, degeneration, degradability, degradation, demoralization, depravation, depravedness, depravity, despoliation, destruction, detriment, deviousness, dilapidation, dilution, dishonesty, dishonor, disintegration, disorganization, dissoluteness, dissolution, doctoring, envenoming, equivocality, equivoque, evasiveness, evil, excrement, false coloring, feloniousness, festering, filth, fortifying, foul matter, fouling, fraudulence, fraudulency, furfur, gammacism, gangrene, graft, grievance, harm, havoc, hurt, ill, improbity, impropriety, indirection, indoctrination, infection, infelicity, injury, jeu de mots, lacing, lambdacism, localism, logogram, logogriph, malapropism, mess, metagram, mildew, mischief, misconstruction, misdirection, misguidance, misinformation, misinstruction, misinterpretation, misknowledge, misleading, mispronunciation, misrepresentation, missaying, misspeaking, misteaching, misusage, misuse, mold, moral pollution, moral turpitude, muck, mucus, mystification, mytacism, obfuscation, obscenity, obscurantism, obscuration, ordure, outrage, oxidation, oxidization, palindrome, paralambdacism, pararhotacism, paronomasia, perversion, play on words, poison, poisoning, pollution, profligacy, prostitution, pun, punning, pus, putrid matter, reindoctrination, reprobacy, resolution, rhotacism, rot, rottenness, rust, scurf, scuz, shadiness, shiftiness, slang, slanting, slime, slipperiness, smut, snot, solecism, sophistry, sordes, spiking, spoilage, spoonerism, straining, subornation, subversion, suppuration, taboo word, the worst, torturing, toxin, trickiness, turpitude, unconscientiousness, underhandedness, ungrammaticism, unsavoriness, unscrupulousness, unstraightforwardness, venom, vexation, vitiation, vulgarism, watering, woe, wordplay, wrong